Sonerila pulchella

Sonerilas are a diverse group of plants in the Melastomaceae family distinguished by having flowers with three petals (as opposed to five for most other plants in this group).  There seems to be a lot of variation within a species, and so the ID of pulchella is a guess.

This Malaysian Sonerila has striking green and pink foliage which just gets more pronounced as the plant matures.  I just got it this year so am not entirely sure how large it gets.

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And the flower,